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Drawn vs annealed copper tube

When copper goes through the dies, it is called drawning. For annealing, after the drawing process the copper gets heat treated. The drawn Copper Tube is generally hard but depending on the number of times it has undergone drawing through the dies, it can become brittle. The annealed Copper Seamless Tubes is softer and has good workability. They can be bent and shaped easily but are less brittle than drawn tubes.

IOL approved Copper seamless tube manufacturer in India

Copper tube manufacturer in India

What is soft annealed copper tube?

The Soft Annealed Copper Tube is flexible, seamless and they are generally available for a longer length. Depending on the grade or type of the material, they can be used in various industries like refrigeration, automotive, oil, natural gas, and so on. The soft Bright Annealed Copper Tube can be easily worked with in low temperature conditions like plumbing applications.

IBR certified supplier of Bright annealed copper tube in Gujarat, Buy CU tubing at factory price

Copper Tube

Copper Tube

Copper Seamless Tube

Copper Seamless Tube

Soft Annealed Copper Tube

Soft Annealed Copper Tube

Half Hard vs Light Anneal copper tube

The half hard Annealed Seamless Copper Tubes can be used for a wide range of applications as they are suitable for bending and forming. They are available in various sizes and diameters ranging between ⅛” to 8⅛”. The half hard can be customized according to the client’s requirements and is available in different forms for plumbing applications, HVAC applications, etc.

The Light Annealed Copper Tubes is softer, which makes it more workable and improves its bendability. The also comes with improved ductility. Depending on the particular grade of the, they have various industrial usages like in refrigeration, automotive, etc.

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Table of Contents


Copper tubing specifications

OD Range Wall Range Form
1.250″ – 6.000″ (30-150milimeter) 0.095″ – 1.000″ (.2.5-25milimeter) Round, Rectangular, Coil, Square, U Tube
Size End Type
15milimeter NB to 150milimeter NB (1/2” to 6”) Plain End, Bevelled End Seamless / ERW / Welded
Stock of EN 12451 grade cuzn20al2as heat exchanger tubes in Gujarat at standard price, all comes with test certificate and MTC Report

Types of copper seamless tube

Welded Copper Tube

Welded Copper Tube

Bright Annealed Copper Tube

Bright Annealed Copper Tube

Light Annealed Copper Tube

Light Annealed Copper Tube

Bunnings Annealed Copper Tube

Bunnings Annealed Copper Tube

Annealed Seamless Copper Tube

Annealed Seamless Copper Tube

ASTM B68 UNS C12200 Heat Exchanger Tubes

ASTM B68 UNS C12200 Heat Exchanger Tubes

AS 1432 copper tube

AS 1432 copper tube

BS EN 1057 Copper Tube

BS EN 1057 Copper Tube

EN 12449 Copper Tube

EN 12449 Copper Tube

EN 12452 copper finned tubes supplier in India, check Welded copper tube fabrication and machining possibilities

Copper tube sizes

Nominal size Inside diameter ID Outside diameter OD
Type K Type L Type M inch mm
inch mm inch mm inch mm
​5⁄8 0.652 16.561 0.668 16.967 0.690 17.526 3⁄4 19.05
​3⁄4 0.745 18.923 0.785 19.939 0.811 20.599 7⁄8 22.225
1 0.995 25.273 1.025 26.035 1.055 26.797 1 1⁄8 28.575
1​1⁄4 1.245 31.623 1.265 32.131 1.291 32.791 1 3⁄8 34.925
​1⁄4 0.305 7.747 0.315 8.001 3⁄8 9.5
​3⁄8 0.402 10.211 0.430 10.922 0.450 11.430 1⁄2 12.7
​1⁄2 0.528 13.411 0.545 13.843 0.569 14.453 5⁄8 15.875
1​1⁄2 1.481 37.617 1.505 38.227 1.527 38.786 1 5⁄8 41.275
2 1.959 49.759 1.985 50.419 2.009 51.029 2 1⁄8 53.975
2​1⁄2 2.435 61.849 2.465 62.611 2.495 63.373 2 5⁄8 66.675
3 2.907 73.838 2.945 74.803 2.981 75.717 3 1⁄8 79.375

Copper tubing weight chart

Type K
Nominal Size (inches) Tolerance on Outside Diameter(inches) Actual Outside Diameter(inches) Weight (lb/ft) Wall Thickness (inches)
Annealed Drawn Nominal Tolerance
1/4 0.002 0.001 3/8 0.375 0.133 0.035 0.0035
3/8 0.0025 0.001 1/2 0.5 0.269 0.049 0.005
1/2 0.0025 0.001 3/8 0.625 0.344 0.049 0.005
5/8 0.0025 0.001 3/4 0.75 0.418 0.049 0.005
3/4 0.003 0.001 7/8 0.875 0.641 0.065 0.006
1 0.0035 0.0015 1 1/8 1.125 0.837 0.065 0.006
1 1/4 0.004 0.0015 1 3/8 1.375 1.04 0.065 0.006
1 1/2 0.0045 0.002 1 5/8 1.625 1.36 0.072 0.007
2 0.005 0.002 2 1/8 2.125 2.06 0.083 0.008
2 1/2 0.005 0.002 2 5/8 2.625 2.92 0.095 0.01
3 0.005 0.002 3 1/8 3.125 4 0.109 0.011
3 1/2 0.005 0.002 3 5/8 3.625 5.12 0.12 0.012
4 0.005 0.002 4 1/8 4.125 6.51 0.134 0.013
5 0.005 0.002 5 1/8 5.125 9.67 0.16 0.016
6 0.005 0.002 6 1/8 6.125 13.87 0.192 0.019

 

Type L
Nominal Size (inches) Wall Thickness (inches) Weight (lb/ft) Actual Outside Diameter(inches) Tolerance on Outside Diameter(inches)
Nominal Tolerance Annealed Drawn
1 0.05 0.005 0.655 1 1/8 1.125 0.0035 0.0015
1 1/4 0.055 0.006 0.884 1 3/8 1.375 0.004 0.0015
1 1/2 0.06 0.006 1.14 1 5/8 1.625 0.0045 0.002
2 0.07 0.007 1.75 2 1/8 2.125 0.005 0.002
2 1/2 0.08 0.008 2.48 2 5/8 2.625 0.005 0.002
3 0.09 0.009 3.33 3 1/8 3.125 0.005 0.002
1/4 0.03 0.003 0.126 3/8 0.375 0.002 0.001
3/8 0.035 0.004 0.198 1/2 0.5 0.0025 0.001
1/2 0.04 0.004 0.285 3/8 0.625 0.0025 0.001
5/8 0.042 0.004 0.362 3/4 0.75 0.0025 0.001
3/4 0.045 0.004 0.455 7/8 0.875 0.003 0.001
3 1/2 0.1 0.01 4.29 3 5/8 3.625 0.005 0.002
4 0.114 0.011 5.38 4 1/8 4.125 0.005 0.002
5 0.125 0.012 7.61 5 1/8 5.125 0.005 0.002
6 0.14 0.014 10.2 6 1/8 6.125 0.005 0.002

 

Type M
Nominal Size (inches) Tolerance on Outside Diameter(inches) Actual Outside Diameter(inches) Wall Thickness (inches) Weight (lb/ft)
Annealed Drawn Nominal Tolerance
2 1/2 0.005 0.002 2 5/8 2.625 0.065 0.006 2.03
3 0.005 0.002 3 1/8 3.125 0.072 0.007 2.68
3 1/2 0.005 0.002 3 5/8 3.625 0.083 0.008 3.58
4 0.005 0.002 4 1/8 4.125 0.095 0.01 4.66
1/4 0.002 0.001 3/8 0.375 0.106
3/8 0.0025 0.001 1/2 0.5 0.025 0.002 0.144
1/2 0.0025 0.001 3/8 0.625 0.028 0.003 0.203
5/8 0.0025 0.001 3/4 0.75 0.263
3/4 0.003 0.001 7/8 0.875 0.032 0.003 0.328
1 0.0035 0.0015 1 1/8 1.125 0.035 0.004 0.464
1 1/4 0.004 0.0015 1 3/8 1.375 0.042 0.004 0.681
1 1/2 0.0045 0.002 1 5/8 1.625 0.049 0.005 0.94
2 0.005 0.002 2 1/8 2.125 0.058 0.006 1.46
5 0.005 0.002 5 1/8 5.125 0.109 0.011 6.66
6 0.005 0.002 6 1/8 6.125 0.122 0.012 8.91

Copper tube manufacturing process

The various processing methods for copper seamless tubes are as follows:

Ingot - hot extrusion - cold drawing - cold rolling

Horizontal continuous casting - cold drawing - cold rolling

Ingot - hot extrusion - cold drawing

Soft annealed copper tube hsn code

7411

Welded copper tube application

  • Heating systems (including solar)
  • Water distribution systems
  • Drainage and vent systems
  • Underground water and gas services
  • Chilled water mains
  • Oxygen systems
  • Non-flammable medical-gas systems
  • Fuel-oil systems

Copper tube dimensions

Outer Dia Nominal Pipe Inner Dia Wall Thickness
Type
K* L** M*** DWV**** K L M DWV
1.375 1-1/4 1.245 1.265 1.291 1.295 0.065 0.055 0.042 0.040
1.625 1-1/2 1.481 1.505 1.527 1.541 0.072 0.060 0.049 0.042
2.125 2 1.959 1.985 2.009 2.041 0.083 0.070 0.058 0.042
2.625 2-1/2 2.435 2.465 2.495 - 0.095 0.080 0.065 -
3.125 3 2.907 2.945 2.981 3.030 0.109 0.090 0.072 0.045
3.625 3.5 3.385 3.425 3.459 - .120 .100 .083 -
0.375 1/4 0.305 0.315 - - 0.035 0.030 - -
0.500 3/8 0.402 0.430 0.450 - 0.049 0.035 0.025 -
0.625 1/2 0.527 0.545 0.569 - 0.049 0.040 0.028 -
0.750 5/8 0.652 0.666 - - 0.049 0.042 - -
0.875 3/4 0.745 0.785 0.811 - 0.065 0.045 0.032 -
1.125 1 0.995 1.025 1.055 - 0.065 0.050 0.035 -
4.125 4 3.857 3.897 3.935 4.009 .134 .114 .095 .058
5.125 5 4.805 4.875 4.907 4.981 .160 .125 .109 .072
6.125 6 5.741 5.845 5.881 5.959 .192 .140 .122 .083
8.125 8 7.583 7.725 7.785 - .271 .200 .170 -

Gauge chart of bright annealed copper tube

O.D. (inches) Gauge (SWG) Wall (inches) Maximum Allowable Pressure (PS) in supplied* condition at 100deg C (Barg)
7/8” 12 0.104 142 125
1.1/8” 18 0.048 51 43
1.1/8” 16 0.064 68 57
1.1/8” 14 0.08 85 72
1.3/8” 18 0.048 41 35
1.3/8” 16 0.064 55 47
1.3/8” 14 0.08 69 59
1.3/8” 12 0.104 90 77
1.5/8” 18 0.048 35 29
1.5/8” 16 0.064 47 39
1.5/8” 14 0.08 58 49
1.5/8” 12 0.104 76 65
3/8” 21 0.032 108 93
1/2” 20 0.036 91 78
1/2” 18 0.048 118 102
5/8” 20 0.036 73 62
5/8” 19 0.04 79 67
5/8” 18 0.048 95 81
3/4” 20 0.036 61 51
3/4” 19 0.04 73 57
3/4” 18 0.048 77 65
3/4” 16 0.064 102 88
7/8” 19 0.04 55 46
7/8” 18 0.048 66 55
7/8” 16 0.064 88 75
1.5/8” 11 0.116 85 73
2.1/8” 18 0.048 27 22
2.1/8” 16 0.064 35 30
2.1/8” 14 0.08 44 37
2.1/8” 12 0.104 58 49
2.5/8” 18 0.048 25 18
2.5/8” 16 0.064 33 24
2.5/8” 14 0.08 41 30
2.5/8” 12 0.104 54 39
3.1/8” 16 0.064 28 20
3.1/8” 14 0.08 35 25
3.1/8” 12 0.104 45 33
3.5/8” 16 0.064 24 17
3.5/8” 14 0.08 30 22
4.1/8” 16 0.064 21 15
4.1/8” 14 0.08 26 19
4.1/8” 12 0.104 34 25

Copper tube standards

  • ASME SB395
  • ASTM B469
  • SAE J461
  • ASTM B359
  • ASTM B111
  • ASTM B395
  • ASME SB359
  • ASME SB111
  • SAE J463
  • ASTM B465

Copper tubing properties

Appearance Reddish Metal
Molecular Weight 63.55
Melting Point 1085 °C
Density 8.96 g/cm3
Boiling Point 2562 °C
Solubility in H2O N/A
Electronegativity 1.90 Paulings
Electrical Resistivity 1.673 μΩ-cm @ 20 °C
Heat of Fusion 13.26 kJ ·mol-1
Heat of Vaporization 300.4 kJ ·mol-1
Specific Heat 0.39 kJ/kg K
Poisson's Ratio 0.34
Thermal Conductivity 401 W ·m-1 ·K-1
Vickers Hardness 369 MPa
Thermal Expansion (25 °C) 16.5 µm·m-1·K-1
Young's Modulus 110–128 GPa

Copper tube pressure rating chart

Working Pressure (psi) (kPa) Nominal Size (in) Actual Burst Pressure (psi) (kPa)
Annealed Drawn Annealed Drawn
420 825 1 1/2 2600 5000
370 726 2 2235 3915
338 664 2 1/2 3575
328 643 3 3450
311 610 3 1/2
306 600 4 3415
293 575 5 3585
913 1796 1/4
960 1889 3/8
758 1490 1/2 4535 9840
626 1229 5/8
724 1424 3/4 4200 9300
557 1093 1 3415 7200
452 888 1 1/4 2800 5525
295 578 6 3425
314 615 8 3635
314 615 10
314 615 12

AS 1432 copper tube thickness

Nominal or standard size, inches Calculated values (based on nominal dimensions) Nominal dimensions, inches
Cross sectional area of bore, sq. inches Weight of tube only, pounds per linear ft. Weight of tube & water, pounds per linear ft. Volume of tube, per linear ft. Outside diameter Inside diameter Wall thickness
Cu ft. Gal.
1 .825 .655 1.01 .00573 .0429 1.125 1.025 .050
11⁄4 1.26 .884 1.43 .00875 .0655 1.375 1.265 .055
11⁄2 1.78 1.14 1.91 .0124 .0925 1.625 1.505 .060
2 3.09 1.75 3.09 .0215 .161 2.125 1.985 .070
21⁄2 4.77 2.48 4.54 .0331 .248 2.625 2.465 .080
3 6.81 3.33 6.27 .0473 .354 3.125 2.945 .090
31⁄2 9.21 4.29 8.27 .0640 .478 3.625 3.425 .100
1⁄4 .078 .126 .160 .00054 .00405 .375 .315 .030
3⁄8 .145 .198 .261 .00101 .00753 .500 .430 .035
1⁄2 .233 .285 .386 .00162 .0121 .625 .545 .040
5⁄8 .348 .362 .506 .00232 .0174 .750 .666 .042
3⁄4 .484 .455 .664 .00336 .0251 .875 .785 .045
4 12.0 5.38 10.1 .0764 .571 4.125 3.905 .110
5 18.7 7.61 15.7 .130 .971 5.125 4.875 .125
6 26.8 10.2 21.8 .186 1.39 6.125 5.845 .140
8 46.9 19.3 39.6 .326 2.44 8.125 7.725 .200
10 72.8 30.1 61.6 .506 3.78 10.125 9.625 .250
12 105 40.4 85.8 .729 5.45 12.125 11.565 .280

Light annealed copper tube yield strength

Psi – 52,000 , MPa – 355

Bunnings annealed copper tubes temper grade

060 (soft), H01 (cold rolled, H00 (cold rolled), high yield), H03 (three quarter hard), H02 (half hard), and H04 (hard).

BS EN 1057 copper tube chemical composition

Element Content (%)
Iron, Fe 0.8-1.2
Phosphorous, P 0.01-0.04
Copper, Cu 98.5 min
Zinc, Zn 0.2

Copper tube grades

Type Flexible form available Fitting Methods Common Use
Type K Yes •Soldered •Compression •Push-fit •Press-connect •Flare (flexible pipe) Main water lines, underground lines
Type L Yes •Soldered •Compression •Push-fit •Press-connect •Flare (flexible pipe) Branch water supply lines
Type M No •Soldered •Compression •Push-fit •Press-connect Branch water supply lines
DWV No Soldered, Slip-joint DWV plumbing lines

Annealed seamless copper tube mechanical properties

Melting Point 1370 °C (2500 °F)
Density 8.89 g/cm3
Tensile Strength Psi – 1,15,000 , MPa – 790
Elongation 40 %
Yield Strength (0.2%Offset) Psi – 52,000 , MPa – 355

AS 1432 copper tube vs EN 12449 Copper Tube

The AS 1432 copper tubes can be used in both pressure and non-pressure plumbing, drainage, and gas fitting applications. These are available in different sizes ranging between 6.35 to 254mm.

The EN 12449 Copper Tubes has the European standard which specifies the composition, dimensional tolerances, property requirements and forms for seamless round drawn copper. Thus also includes the copper tubes used for general purposes. They are available in the size range of 3mm to 450mm OD.